OEM Toyota – Fits FJ40/45, FJ55 – 9/1966 – 1/1975 If your clutch isn’t giving the throw you need with every pedal push, or maybe the master cylinder is leaking inside the cab, these are sure signs that your clutch system needs service. This master cylinder kit has what you need to get the clutch pedal pumping again! – Services 3/4″ bore CLUTCH master cylinders. – Does not include a new dust boot. *Tech Tip: We always recommend rebuilding or replacing the slave cylinder at the same time as the master cylinder. When rebuilding, it is a good idea to hone the cylinder wall to ensure a proper seal.